Test of a Melting Criterion for Cubic Metals
Test of a Melting Criterion for Cubic Metals
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立方金属熔化准则的测试
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
P. Sharma
中科院分区：
文献类型：
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作者：
Rajendra P. Gupta;P. Sharma
用我们先前提出的立方金属晶格动力学的电子气模型，通过计算属于元素周期表中不同基团的若干立方金属的热振动均方幅度与熔点原子间距平方之比γm，检验了林德曼熔化判据。对于属于一个特定组的元素，计算出的γm具有大致相同的值，但γm值从一个组到另一个组的差异相当大。结果表明，林德曼关于所有固体的γm均为常数的假设是不充分的。
The electron gas model for the lattice dynamics of cubic metals propounded by one of us earlier has been used to test Lindemann's melting criterion by calculating the ratio γm of the mean‐square amplitude of thermal vibrations to the square of the interatomic spacing at the melting point for a number of cubic metals belonging to different groups of the periodic table. The calculated γm has roughly the same value for elements belonging to one particular group, but the spread in γm values is quite large from one group to another. It is concluded that Lindemann's hypothesis of constant γm for all solids is inadequate.